NEWEST 2026-2027 WITH COMPLETE QUESTIONS
AND CORRECT ANSWERS |BRAND NEW VERSION!
1. Which of the following is the primary function of red
blood cells?
A. Produce antibodies
B. Transport oxygen
C. Digest nutrients
D. Regulate hormones
Rationale: Red blood cells contain hemoglobin, which
binds oxygen for transport to tissues.
Correct Answer: B. Transport oxygen
2. What is the normal range for adult body temperature in
Celsius?
A. 34–35°C
B. 35–36°C
C. 36–37.5°C
D. 38–39°C
Rationale: Normal body temperature typically ranges
between 36–37.5°C.
Correct Answer: C. 36–37.5°C
3. Which electrolyte is primarily responsible for nerve
impulse transmission?
A. Calcium
, B. Potassium
C. Sodium
D. Magnesium
Rationale: Sodium and potassium are essential for action
potentials; sodium influx initiates nerve impulses.
Correct Answer: C. Sodium
4. Which of the following is a sign of hypoxia?
A. Cyanosis
B. Polyuria
C. Hyperglycemia
D. Bradycardia
Rationale: Cyanosis, a bluish discoloration of skin and
mucous membranes, indicates low oxygen levels.
Correct Answer: A. Cyanosis
5. What is the main purpose of hand hygiene in healthcare
settings?
A. Reduce patient discomfort
B. Prevent transmission of pathogens
C. Lubricate skin
D. Improve circulation
Rationale: Hand hygiene is the most effective method to
prevent healthcare-associated infections.
Correct Answer: B. Prevent transmission of pathogens
6. Which vitamin is essential for blood clotting?
A. Vitamin A
B. Vitamin B12
, C. Vitamin K
D. Vitamin D
Rationale: Vitamin K is necessary for synthesis of clotting
factors in the liver.
Correct Answer: C. Vitamin K
7. Which organ is primarily responsible for detoxification of
drugs?
A. Kidney
B. Liver
C. Pancreas
D. Spleen
Rationale: The liver metabolizes and detoxifies many
substances before excretion.
Correct Answer: B. Liver
8. Which type of immunity is acquired after vaccination?
A. Passive immunity
B. Innate immunity
C. Active immunity
D. Natural immunity
Rationale: Vaccines stimulate active immunity by
triggering the body to produce its own antibodies.
Correct Answer: C. Active immunity
9. Which of the following is a sign of dehydration?
A. Edema
B. Dry mucous membranes
C. Bradycardia
, D. Cyanosis
Rationale: Dry mucous membranes are an early indicator
of fluid loss.
Correct Answer: B. Dry mucous membranes
10. Which physiological process is primarily responsible
for maintaining body temperature?
A. Diffusion
B. Thermoregulation
C. Filtration
D. Respiration
Rationale: Thermoregulation maintains core body
temperature through mechanisms like sweating and
shivering.
Correct Answer: B. Thermoregulation
11. Which type of blood cell defends the body against
infection?
A. Erythrocytes
B. Leukocytes
C. Platelets
D. Reticulocytes
Rationale: Leukocytes (white blood cells) are the primary
immune defense against pathogens.
Correct Answer: B. Leukocytes
12. Which is the correct sequence of blood flow through
the heart?
A. Right atrium → Right ventricle → Lungs → Left atrium